Update Molecule Shapes: Basics in the main "PhET-iO Simulations" spreadsheet

[jbphet]

I just published a maintenance release of this sim for phetsims/rosetta#388. There are published phet-io versions of this sim, so I included phet-io as a brand for the maintenance release. At the end of the build process it said:

2. Create an issue in the phet-io repo and assign to @kathy-phet to update the main "PhET-iO Simulations" spreadsheet from this new publication. (https://docs.google.com/spreadsheets/d/18_QNGuVtYtxOEKG9xRBs_PSQpyvzySF1Gk5puR-5Fv4/edit#gid=1881767354)

I looked at the spreadsheet and it does seem a little out of date for this sim, so here's the issue.